Emergency funds: Three to six months of expenses (Looking to boost this to 6 months – Vested Federal Employee)
Debt: No credit card debt, car loan, or mortgage. I owe approximately $55,000 to my parents for school. They took out a home equity line of credit at 2-3% (I believe it’s variable). Two months ago I paid off a separate loan at a higher interest rate, so I’m looking to put more money towards this one. Parents have not kept track of how much they borrowed for me (and my siblings education) and how much we each owe. I would really like to get principal and interest rate before contributing more.
Tax Filing Status: (Single)
Tax Rate: 25% Federal, -- 4 percent on the first $10,000 of taxable income,-- 6 percent on taxable income between $10,001 and $40,000,
-- 8.5 percent on taxable income of $40,001 and above.
State of Residence: Washington DC
Age:25
Desired Asset allocation: 80% stocks / 20% bonds
Desired International allocation: 50% of stocks

C and GE are such a small part of your portfolio (and will continue to get smaller with each contribution to TSP) I would just liquidate and add them to your overall desired AA. They don't really fit in with your plan.

As far as your 80/20 stock bonds go, I don't see any bonds in your current portfolio, are you looking to just pull the trigger on it and get it done? I'd do it within the TSP.
Overall 80/20 AA possibility with 50% of stocks international-TSP ~70% of overall portfolio
10% G
10% F
40% C
30% S
10% I

Roth- ~30% of overall portfolio
100% Total International Stock Index

Your TSP will outgrow your ROTH by sheer contribution rate, so you'll need to figure out how the new allocations will keep the percentages in check. You can divert each paycheck to the underperforming funds while your portfolio is still relatively small, but eventually this won't work anymore and you'll have to use rebalancing.

Make sure in TSP you're using dollar amounts so you don't out contribute your agency match before the end of the year.

The Total International is more complete with Vanguard which is why I chose it for the ROTH, so make sure you max the ROTH with that, and compliment it with the I fund. Also, I overweighted small caps in the TSP because of your age and investing time horizon, expected return is higher on them than C, but they are also more volatile. If you don't like that you can hold the C and S something like 55/15 or 45/25.